Stop chromevox audio and clear focus highlight on switch to arc app

chrome/browser/ui/ash/chrome_shell_delegate.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/ui/ash/chrome_shell_delegate.h"
 
 #include <stddef.h>
 
 #include <limits>
 
@@ skipping 17 matching lines @@
 #include "chrome/browser/app_mode/app_mode_utils.h"
 #include "chrome/browser/chrome_notification_types.h"
 #include "chrome/browser/chromeos/accessibility/accessibility_manager.h"
 #include "chrome/browser/chromeos/accessibility/magnification_manager.h"
 #include "chrome/browser/chromeos/background/ash_wallpaper_delegate.h"
 #include "chrome/browser/chromeos/display/display_configuration_observer.h"
 #include "chrome/browser/chromeos/display/display_preferences.h"
 #include "chrome/browser/chromeos/policy/display_rotation_default_handler.h"
 #include "chrome/browser/chromeos/profiles/profile_helper.h"
 #include "chrome/browser/chromeos/system/input_device_settings.h"
+#include "chrome/browser/chromeos/ui/accessibility_focus_ring_controller.h"
 #include "chrome/browser/lifetime/application_lifetime.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/profiles/profile_manager.h"
 #include "chrome/browser/profiles/profiles_state.h"
 #include "chrome/browser/signin/signin_error_notifier_factory_ash.h"
 #include "chrome/browser/speech/tts_controller.h"
 #include "chrome/browser/sync/sync_error_notifier_factory_ash.h"
 #include "chrome/browser/ui/app_list/app_list_view_delegate.h"
 #include "chrome/browser/ui/ash/app_list/app_list_service_ash.h"
 #include "chrome/browser/ui/ash/chrome_keyboard_ui.h"
@@ skipping 204 matching lines @@
 
   bool IsBrailleDisplayConnected() const override {
     DCHECK(AccessibilityManager::Get());
     return AccessibilityManager::Get()->IsBrailleDisplayConnected();
   }
 
   void SilenceSpokenFeedback() const override {
     TtsController::GetInstance()->Stop();
   }
 
+  void ClearFocusHighlight() const override {
+    chromeos::AccessibilityFocusRingController::GetInstance()->SetFocusRing(
+        std::vector<gfx::Rect>(),
+        chromeos::AccessibilityFocusRingController::PERSIST_FOCUS_RING);
+  }
+
   void SaveScreenMagnifierScale(double scale) override {
     if (chromeos::MagnificationManager::Get())
       chromeos::MagnificationManager::Get()->SaveScreenMagnifierScale(scale);
   }
 
   double GetSavedScreenMagnifierScale() override {
     if (chromeos::MagnificationManager::Get()) {
       return chromeos::MagnificationManager::Get()
           ->GetSavedScreenMagnifierScale();
     }
@@ skipping 277 matching lines @@
       NOTREACHED() << "Unexpected notification " << type;
   }
 }
 
 void ChromeShellDelegate::PlatformInit() {
   registrar_.Add(this, chrome::NOTIFICATION_LOGIN_USER_PROFILE_PREPARED,
                  content::NotificationService::AllSources());
   registrar_.Add(this, chrome::NOTIFICATION_SESSION_STARTED,
                  content::NotificationService::AllSources());
 }